LHC Probes of TeV-Scale Scalars in SO(10) Grand Unification

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AYDEMİR U., Mandal T.

ADVANCES IN HIGH ENERGY PHYSICS, vol.2017, 2017 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 2017
  • Publication Date: 2017
  • Doi Number: 10.1155/2017/7498795
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Middle East Technical University Affiliated: Yes


We investigate the possibility of TeV-scale scalars as low energy remnants arising in the nonsupersymmetric SO(10) grand unification framework where the field content is minimal. We consider a scenario where the SO(10) gauge symmetry is broken into the gauge symmetry of the Standard Model (SM) through multiple stages of symmetry breaking, and a colored and hypercharged scalar.. picks a TeV-scale mass in the process. The last stage of the symmetry breaking occurs at the TeV-scale where the left-right symmetry, that is, SU(2)(L)circle times SU(2)(L)circle times U(1)(B-L)circle times SU(3)(C) is broken into that of the SM by a singlet scalar field S of mass M-g similar to 1TeV, which is a component of an SU(2)(R)-triplet scalar field, acquiring a TeV-scale vacuum expectation value. For the LHC phenomenology, we consider a scenario where S is produced via gluon-gluon fusion through loop interactions with.. and also decays to a pair of SM gauge bosons through chi in the loop. We find that the parameter space is heavily constrained from the latest LHC data. We use a multivariate analysis to estimate the LHC discovery reach of delta into the diphoton channel.